<%@page import="ChartDirector.*, java.util.*" %>
<%
// The x and y coordinates of the grid
double[] dataX = {-4, -3, -2, -1, 0, 1, 2, 3, 4};
double[] dataY = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

// The values at the grid points. In this example, we will compute the values using the formula z =
// 20 / (1 + 1 / (1 + 3.5 ** (x + 0.5))) - 10.
double[] dataZ = new double[dataX.length * dataY.length];
for(int yIndex = 0; yIndex < dataY.length; ++yIndex) {
    for(int xIndex = 0; xIndex < dataX.length; ++xIndex) {
        dataZ[yIndex * dataX.length + xIndex] = 20 / (1 + 1 / (1 + Math.pow(3.5, dataX[xIndex] + 0.5
            ))) - 10;
    }
}

// Create a SurfaceChart object of size 720 x 600 pixels
SurfaceChart c = new SurfaceChart(720, 600);

// Set the center of the plot region at (350, 280), and set width x depth x height to 360 x 360 x
// 270 pixels
c.setPlotRegion(350, 280, 360, 360, 270);

// Set the data to use to plot the chart
c.setData(dataX, dataY, dataZ);

// Spline interpolate data to a 80 x 80 grid for a smooth surface
c.setInterpolation(80, 80);

// Set the elevation and rotation angles to 30 and 315 degrees
c.setViewAngle(45, 315);

// Add a color axis (the legend) 20 pixels from the right border. Set the length to 200 pixels and
// the labels on the right side.
ColorAxis cAxis = c.setColorAxis(c.getWidth() - 20, 275, Chart.Right, 200, Chart.Right);

// The color gradient used for the color axis
int[] colorGradient = {0x00aa00, 0x66ff00, 0xffff00, 0xffcc00, 0xff0000};
cAxis.setColorGradient(false, colorGradient);

// Add a semi-transparent blue (0x7f0000ff) rectangular surface zone with opposite corners at (0, 1)
// and (1.6, 2)
c.addSurfaceZone(0, 1, 1.6, 2, 0x7f0000ff, 0x7f0000ff, 2);

// Add a semi-transparent grey (0x7fdddddd) rectangular surface zone with opposite corners at (2, 7)
// and (3.5, 9.5)
c.addSurfaceZone(2, 7, 3.5, 9.5, 0x7fdddddd, 0x7fdddddd, 2);

// Add a surface line from (-4, 3) to (0, 10). Use brown (0x444400) dash line with a line width of 2
// pixels.
c.addSurfaceLine(-4, 3, 0, 10, c.dashLineColor(0x444400), 2);

// Add a surface line from (-2, 10) to (0, 5) to (1, 8) to (4, 0.5). Use purple color with a line
// width of 2 pixels.
double[] lineX = {-2, 0, 1, 4};
double[] lineY = {10, 5, 8, 0.5};
c.addSurfaceLine2(lineX, lineY, 0x880088, 2);

// Add two surface lins to create a X symbol.
c.addSurfaceLine(-1.4, 3.9, -1.6, 4.1, 0x000088, 2);
c.addSurfaceLine(-1.6, 3.9, -1.4, 4.1, 0x000088, 2);

// Add a small surface zone with transparent fill color and a 2-pixel border to create a square
// symbol.
c.addSurfaceZone(-1.4, 2.9, -1.6, 3.1, Chart.Transparent, 0x000088, 2);

// Add a legend box align to the right edge of the chart. Use 10pt Arial Bold font. Set the
// background and border to transparent.
LegendBox b = c.addLegend(c.getWidth() - 1, 10, true, "Arial Bold", 10);
b.setAlignment(Chart.TopRight);
b.setBackground(Chart.Transparent, Chart.Transparent);

// Set the legend icon size to 24 x 15 pixels. Set a gap of 10 pixels between the icon and the text.
b.setKeySize(24, 15, 10);

// Add legend entries for the zones, lines and symbols
b.addKey("Sample Zone 1", 0x7f0000ff);
b.addKey("Sample Zone 2", 0x7fdddddd);
b.addKey("Sample Line 1", 0x880088, 2);
b.addKey("Sample Line 2", c.dashLineColor(0x444400), 2);
b.addText(
    "<*block,width=24,halign=center*><*img=@Square,width=11,edgeColor=000000*><*/*><*advance=10*>" +
    "Symbol 1");
b.addText(
    "<*block,width=24,halign=center*><*img=@Cross2(0.1),width=11,color=000000*><*/*>" +
    "<*advance=10*>Symbol 2");

// Set the x, y and z axis titles using 12pt Arial Bold font
c.xAxis().setTitle("X Title<*br*>Placeholder", "Arial Bold", 12);
c.yAxis().setTitle("Y Title<*br*>Placeholder", "Arial Bold", 12);
c.zAxis().setTitle("Z Title Placeholder", "Arial Bold", 12);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "",
    "title='<*cdml*><*b*>X: {x|2}<*br*>Y: {y|2}<*br*>Z: {z|2}'"));
%>
<!DOCTYPE html>
<html>
<head>
    <title>Surface Lines and Zones</title>
    <!-- Include ChartDirector Javascript Library to support chart interactions -->
    <script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
    <div style="font:bold 18pt verdana;">
        Surface Lines and Zones
    </div>
    <hr style="border:solid 1px #000080; background:#000080" />
    <div style="font:10pt verdana; margin-bottom:1.5em">
        <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
    </div>
    <!-- ****** Here is the chart image ****** -->
    <%= viewer.renderHTML(response) %>
</body>
</html>
